I just did my first large(between a queen and full size) on my home machine and wished I had rubber tipped gloves. I spraybasted it and it works wonderful. I found as long as I worked insie my hand span it went well, but if not it was a
little sloppy. Tried different motifs and stipped alot too! I found it really fun after the initial first hour. Take your time also, dont get in a rush. I watched a quilting a big machine class on CRafty that actually made me brave enough to try it. You can do it!